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authorDavid Howells <dhowells@redhat.com>2008-08-13 16:20:04 +0100
committerJames Morris <jmorris@namei.org>2008-08-14 09:35:23 +1000
commit9e2b2dc4133f65272a6d3c5dcb2ce63f8a87cae9 (patch)
tree96a9da2c1e733cce2dced4868aaa68b48ced49e1 /MAINTAINERS
parent8d0968abd03ec6b407df117adc773562386702fa (diff)
CRED: Introduce credential access wrappers
The patches that are intended to introduce copy-on-write credentials for 2.6.28 require abstraction of access to some fields of the task structure, particularly for the case of one task accessing another's credentials where RCU will have to be observed. Introduced here are trivial no-op versions of the desired accessors for current and other tasks so that other subsystems can start to be converted over more easily. Wrappers are introduced into a new header (linux/cred.h) for UID/GID, EUID/EGID, SUID/SGID, FSUID/FSGID, cap_effective and current's subscribed user_struct. These wrappers are macros because the ordering between header files mitigates against making them inline functions. linux/cred.h is #included from linux/sched.h. Further, XFS is modified such that it no longer defines and uses parameterised versions of current_fs[ug]id(), thus getting rid of the namespace collision otherwise incurred. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: James Morris <jmorris@namei.org>
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